Find all School-related info fast with the new School-Specific MBA Forum

 It is currently 27 Oct 2016, 08:14

GMAT Club Daily Prep

Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.

Customized
for You

we will pick new questions that match your level based on your Timer History

Track

every week, we’ll send you an estimated GMAT score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Events & Promotions

Events & Promotions in June
Open Detailed Calendar

m03 # 11 question

Author Message
Intern
Joined: 06 Oct 2010
Posts: 18
Location: United States
GMAT 1: 740 Q49 V42
GPA: 3.01
Followers: 0

Kudos [?]: 5 [0], given: 0

Show Tags

29 Jun 2011, 06:52
If x is an integer, is x even?

1. 11/x is an integer
2. 22/x is an integer

SVP
Joined: 16 Nov 2010
Posts: 1673
Location: United States (IN)
Concentration: Strategy, Technology
Followers: 34

Kudos [?]: 492 [0], given: 36

Re: m03 # 11 question [#permalink]

Show Tags

29 Jun 2011, 06:55
(1) says

11/x is an integer

We know that 11 is a prime, so it can be divisible only by 1 or 11, so x = 1 or 11

=> x is odd, and the answer to the question is a definite No.

Thus (1) is Sufficient

(2) says 22/x is integer, but now x can be 1,2,11,22

=> x can be odd/even

So (2) is not sufficient

_________________

Formula of Life -> Achievement/Potential = k * Happiness (where k is a constant)

GMAT Club Premium Membership - big benefits and savings

Intern
Joined: 14 Nov 2011
Posts: 1
Concentration: General Management
GMAT Date: 03-22-2012
Followers: 0

Kudos [?]: 0 [0], given: 1

Re: m03 # 11 question [#permalink]

Show Tags

26 Feb 2012, 16:16
Why couldn't X be zero? 11/0 = 0 which is an even integer. That would make the answer E.
Math Expert
Joined: 02 Sep 2009
Posts: 35321
Followers: 6648

Kudos [?]: 85843 [0], given: 10254

Re: m03 # 11 question [#permalink]

Show Tags

26 Feb 2012, 16:35
hummcon wrote:
Why couldn't X be zero? 11/0 = 0 which is an even integer. That would make the answer E.

Division by zero is undefined, so 11/0 is not allowed. The question should mention that x does not equal to zero to avoid confusion. It will be corrected for the next edition.

For more on number properties check Number Theory chapter of Math Book: math-number-theory-88376.html

Hope it helps.
_________________
Re: m03 # 11 question   [#permalink] 26 Feb 2012, 16:35
Similar topics Replies Last post
Similar
Topics:
17 M03 #24 DS Question 21 09 Dec 2008, 16:09
47 M03 #23 18 04 Oct 2008, 03:55
1 M03 #6 9 20 Sep 2008, 17:08
22 M03 #01 27 19 Sep 2008, 17:06
3 M03 #19 18 15 Sep 2008, 12:36
Display posts from previous: Sort by

m03 # 11 question

Moderator: Bunuel

 Powered by phpBB © phpBB Group and phpBB SEO Kindly note that the GMAT® test is a registered trademark of the Graduate Management Admission Council®, and this site has neither been reviewed nor endorsed by GMAC®.